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Publication numberUS5366650 A
Publication typeGrant
Application numberUS 08/105,955
Publication dateNov 22, 1994
Filing dateAug 13, 1993
Priority dateAug 13, 1993
Fee statusLapsed
Publication number08105955, 105955, US 5366650 A, US 5366650A, US-A-5366650, US5366650 A, US5366650A
InventorsArnold Wiesenfeld, James K. Barbour
Original AssigneeCastlebar Industries Corp.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Ice-melting composition having anti-corrosion properties
US 5366650 A
Abstract
The present invention relates to ice melters having a ph of less than 7 to make them acidic and having an anti-corrosion compound dispersed therein, such as 2 Butyne-1,4 diol, so that the ice melter is environmentally safe and greatly reduces the corrosion of steel bridges, guard rails on roads, and the like.
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Claims(18)
What is claimed is:
1. An ice-melting composition having anti-corrosion properties, comprising:
a) an ice-melting chemical selected from the group consisting of a chloride salt, urea, ammonium sulfate, calcium magnesium acetate, and combinations thereof, said ice-melting chemicals being at least 95% by weight of said ice-melting composition;
b) said ice-melting chemicals having a ph value of less than 7 so as to be acidic; and
c) an anti-corrosion compound being 2-butyne-1,4 diol in said ice-melting composition in the range of 0.20% to 5% by weight of said ice-melting composition.
2. An ice-melting composition in accordance with claim 1, wherein said chloride salt is sodium chloride, potassium chloride, calcium chloride, or magnesium chloride.
3. An ice-melting composition in accordance with claim 1, wherein said ice-melting chemicals have a ph in the range of between 5.0 and 6.0.
4. An ice-melting composition in accordance with claim 1, wherein said 2 Butyne-1,4 diol is dispersed in said ice-melting composition in the range of 0.20% to 1% by weight.
5. An ice-melting composition in accordance with claim 1, wherein said 2 Butyne-1,4 diol is dispersed in said ice-melting composition in the range of 0.45% to 0.55% by weight.
6. An ice-melting composition having anti-corrosion properties, comprising:
a) an ice-melting chemical selected from the group consisting of a chloride salt, urea, ammonium sulfate, calcium magnesium acetate, and combinations thereof, said ice-melting chemicals being at least 95% by weight of said ice-melting composition;
b) said ice-melting chemicals having a ph value of less than 7 so as to be acidic; and
c) an anti-corrosion compound dispersed in said ice-melting composition in the range of 0.20% to 5% by weight of said ice-melting composition selected from the group consisting of an acelylenic alcohol derivative, alkyl amine, oximine, aryl amine, a thiourea derivative, and an alkyl amine derivative.
7. An ice-melting composition in accordance with claim 6, wherein said chloride salt is sodium chloride, potassium chloride, calcium chloride, or magnesium chloride.
8. An ice-melting composition in accordance with claim 6, wherein said ice-melting chemicals have a pH in the range of between 5.0 and 6.0.
9. An ice-melting composition in accordance with claim 6, wherein said acelylenic alcohol derivative is dispersed in said ice-melting composition in the range of 0.20% to 1% by weight.
10. An ice-melting composition in accordance with claim 6, wherein said acelylenic alcohol derivative is dispersed in said ice-melting composition in the range of 0.45% to 0.55% by weight.
11. An ice-melting composition in accordance with claim 6, wherein said alkyl amine is dispersed in said ice-melting composition in the range of 0.20% to 1% by weight.
12. An ice-melting composition in accordance with claim 6, wherein said alkyl amine is dispersed in said ice-melting composition in the range of 0.45% to 0.55% by weight.
13. An ice-melting composition in accordance with claim 6, wherein said oximine is dispersed in said ice-melting composition in the range of 0.20% to 1% by weight.
14. An ice-melting composition in accordance with claim 6, wherein said oximine is dispersed in said ice-melting composition in the range of 0.45% to 0.55% by weight.
15. An ice-melting composition in accordance with claim 6, wherein said aryl amine is dispersed in said ice-melting composition in the range of 0.20% to 1% by weight.
16. An ice-melting composition in accordance with claim 6, wherein said aryl amine is dispersed in said ice-melting composition in the range of 0.45% to 0.55% by weight.
17. An ice-melting composition in accordance with claim 6, wherein said thiourea derivative is dispersed in said ice-melting composition in the range of 0.20% to 1% by weight.
18. An ice-melting composition in accordance with claim 6, wherein said thiourea derivative is dispersed in said ice-melting composition in the range of 0.45% to 0.55% by weight.
Description
FIELD OF THE INVENTION

The present invention relates to ice melters having a ph of less than 7 to make them acidic and having an anti-corrosion compound dispersed therein, such as 2 Butyne-1,4 diol, so that the ice melter is environmentally safe and greatly reduces the corrosion of steel bridges, guard rails on roads, and the like.

BACKGROUND OF THE INVENTION

Ice melters have been known and used for many years on roads, bridges, driveways, walkways, and the like. However, presently-used ice melters commonly cause corrosion damage to steel bridges, guard rails on roads, metal fences and gates, and the like. Although there have been attempts to reduce the corrosive effect of ice melters, they have not been sufficiently effective, and they are not always safe to the environment. For example, in one case, phosphates have been added to ice melters to reduce their corrosive effects, but phosphates have been barred by local ordinances in some areas because they are not environmentally safe.

Accordingly, it is an object of the present invention to provide an improved ice melter which has anti-corrosion properties and which is environmentally safe.

SUMMARY OF THE INVENTION

In the present invention, there is provided an ice-melting composition having anti-corrosion properties, which includes an ice-melting chemical selected from the group consisting of a chloride salt, urea, ammonium sulfate, calcium magnesium acetate, and combinations thereof, with the ice-melting chemicals being at least 95% by weight of the ice-melting composition. The ice-melting chemicals have a ph value of less than 7 so as to be acidic.

An anti-corrosion compound is dispersed in the ice-melting composition in the range of up to 5% by weight of the ice-melting composition, and in the preferred embodiment, the anti-corrosion compound is 2 Butyne-1,4 diol and is 0.50% by weight of the ice-melting composition.

Further objects, features, and advantages of the present invention will become apparent upon consideration of the detailed description of the presently-preferred embodiment.

DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

The present invention will work with most commonly-used ice melters or ice-melting chemicals, such as chloride salts, which include sodium chloride, potassium chloride, calcium chloride, and magnesium chloride. Examples of other ice-melting compounds include urea, ammonium sulfate, and calcium magnesium acetate.

In accordance with the present invention, any one of these ice melters, or any combination thereof, is combined with an anti-corrosion compound used to control base metal attacks in acid pickling baths. The ice-melting composition of the present invention can be a physical mixture of the ice-melters and the anti-corrosion compound, or it can be a mixture of the crystallized solids obtained by evaporating a solution of the components. The anti-corrosion compound may be any of those used to protect base metals from attack in sulfuric acid or hydrochloric acid pickling baths. The preferred anti-corrosion compound is 2 Butyne-1,4 diol.

In addition, other anti-corrosion compounds may be used, such as:

A. Thiourea and its derivatives. Examples of these compounds are:

1. Diethyl thiourea

2. Allyl thiourea

3. 1-(3 amino-4-phenylazopyrazol-5-yl)-3-benzyl thiourea

4. Quinoline

5. Acriflavine

B. Aromatic and alkyl amine and their derivatives. Examples of these compounds are:

1. Alkyl aryl amines

2. Alkynoxymethyl amines

3. Oximines

4. Nitriles

5. Nitropyridine

6. Lutidine

7. Collidine

8. Mono n-butyl amine

9. Dibutyl amine

10. Tributyl amine

11. Phenylene diamine and derivatives (ortho, meta and para)

12. Cyclo hexyl amine

13. Diphenyl amine

C. Quaternaries and their derivatives. Examples of these compounds are:

1. 1,1'-alkylene bispyridinium compounds with quaternary substitution on the ring

2. Hexamethylenetetramine hydro iodide

D. Fatty acid ethoxylates and their derivatives. Examples of these compounds are:

1. Tall oil fatty acid ethoxylates

2. Soya bean fatty acid ethoxylates

3. Cotton seed oil fatty acid ethoxylates

4. Linseed oil fatty acid ethoxylates

E. Sulfur-containing compounds. Examples of these compounds are:

1. Sulfoxides

2. Alkyl sulfides

3. Dibutyl sulfide

4. Thiosemicarbazide

5. 1-phenyl thiosemicarbazide

6. Metacaptans

7. Thioethers

8. Sulfonium

9. Thiocyanates

10. 2-Mercaptobenothiazole

F. Acelylenic alcohol compounds. An example of such a compound is:

1. 2 Butyne - 1,4 diol

G. Heteraromatic compounds. An example of such a compound is:

1. Benzotriazole

H. Miscellaneous compounds. Examples of these compounds are:

1. Formaldlyhyde

2. Furfuraldehyde

3. Biguanide

4. Guanylurea

5. Biuret

6. Coal tar extracts

7. para Toluene sulfonic acid

8. beta Naphthalene sulfonic acid

9. Katapins

10. Rodine (trade name) 204 [76162-22-8]

11. Chimec 315S [88385-18-6]

12. Tenzinat PA-221 [88403-32-1]

The anti-corrosion compound is dispersed throughout the ice-melting crystals or chemicals, so they are released simultaneously with the dissolving of the ice-melting crystals. The anti-corrosion compound may be up to 5% by weight of the ice-melting composition of the present invention, but the preferred range is 0.20% to 1% by weight, and the preferred embodiment is 0.50% by weight. Another preferred range is 0.45% to 0.55% by weight.

The ice-melting chemicals normally used for melting ice, such as chloride salts, are typically basic and have a ph value above 7. Such ice-melting chemicals will not perform as desired in accordance with the present invention, and it has been found that the ice-melting composition of the present invention should have a ph value of less than 7, so as to be slightly acidic. Preferably, the ph value should be in the range of between 5.0 and 6.0. This can be accomplished by adding 0.2% by weight of a weak organic acid to the ice-melting composition, to adjust the ph value to the desired range. Alternatively, the ice-melting salts can have their ph value adjusted to less than 7.

Laboratory tests have been conducted and support the results of the present invention. In laboratory tests, mild steel coupons were submerged in 5% aqueous solutions of 1) salt; 2) calcium chloride; 3) salt, magnesium chloride, urea, calcium chloride, and 2 Butyne-1,4 diol; and 4) water for 10 minutes. The 4 coupons were removed and air dried. The coupons from the solutions without the anti-corrosion compound (Nos. 1, 2, and 4) showed a rusty appearance. The coupon removed from solution No. 3 (with the protective chemical) was clear and colorless. The dried coupons showed a substantial covering of rust, except for the one soaked in solution No. 3, which had only a fraction of the amount of rust, part of which was of a darker, firmer texture and continued to add to the coupon more readily, resulting in less metal loss.

In accordance with the present invention, there is provided an improved ice melter, which has anti-corrosion properties and which is environmentally safe.

A latitude of modification, change, and substitution is intended in the foregoing disclosure, and in some instances, some features of the invention will be employed without a corresponding use of other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the spirit and scope of the invention herein.

Patent Citations
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US2980620 *Feb 28, 1956Apr 18, 1961Hagan Chemicals & Controls IncMethod of inhibiting ice melting salts and products for use in ice melting
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*DE156918C Title not available
EP0386886A1 *Feb 6, 1990Sep 12, 1990General Atomics International Services CorporationDeicing compositions comprising calcium magnesium acetate and chelating agent
JPS60195178A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5478487 *Jul 16, 1993Dec 26, 1995Hurme Consulting OyMethod for denaturing road salt and denatured road salt
US5645755 *Jul 20, 1995Jul 8, 1997Castlebar Industries Corp.Ice-melting composition having anti-corrosion properties
US5683619 *Jan 27, 1997Nov 4, 1997Ossian, Inc.De-icing composition and method for making same
US5709812 *Apr 25, 1996Jan 20, 1998Janke; George A.Deicing composition and method
US5709813 *Mar 21, 1996Jan 20, 1998Janke; George A.Deicing composition and method
US5843330 *Sep 30, 1996Dec 1, 1998Castlebar Industries Corp.Anti-icing composition having anti-corrosion and anti-spalling properties
US5919394 *Jan 20, 1998Jul 6, 1999Ice Ban Usa, Inc.Deicing composition and method
US5922240 *Jul 14, 1997Jul 13, 1999Ice Ban Usa, Inc.Deicing composition and method
US5932135 *Jan 20, 1998Aug 3, 1999George A. JankeDeicing composition and method
US5965058 *Jun 3, 1997Oct 12, 1999Ice Ban Usa, Inc.Deicing composition and method
US6821453Oct 25, 2001Nov 23, 2004Bae Kyoon KimEnvironmentally safe and low corrosive de-icers and a method of manufacturing same
US7314577Jan 21, 2005Jan 1, 2008Cargill, IncorporatedDeicer compositions including corrosion inhibitors
US7531491 *Nov 5, 2004May 12, 2009Samsung Electronics Co., Ltd.Aqueous cleaning solution for integrated circuit device and method of cleaning using the cleaning solution
US7556742 *Mar 8, 2008Jul 7, 2009Shahram Ghaemaghami RadDeicing and anti-icing composition having anti-corrosion properties and method for making same
US8343599Aug 25, 2009Jan 1, 2013Jason MitchellSurface covering for melting ice and snow
US8790764Dec 18, 2012Jul 29, 2014Jason MitchellSurface covering for melting ice and snow
US20050159322 *Nov 5, 2004Jul 21, 2005Chang-Sup MinAqueous cleaning solution for integrated circuit device and method of cleaning using the cleaning solution
US20050230658 *Jan 21, 2005Oct 20, 2005Koefod Robert SDeicer compositions including corrosion inhibitors
US20080061266 *Nov 16, 2007Mar 13, 2008Cargill, IncorporatedDeicer compositions including corrosion inhibitors
US20100055360 *Aug 25, 2009Mar 4, 2010Jason MitchellSurface Covering For Melting Ice And Snow
EP1711575A2 *Jan 21, 2005Oct 18, 2006Cargill, IncorporatedDeicer compositions including corrosion inhibitors
Classifications
U.S. Classification252/70, 106/13
International ClassificationC09K3/18
Cooperative ClassificationC09K3/185
European ClassificationC09K3/18B
Legal Events
DateCodeEventDescription
Aug 13, 1993ASAssignment
Owner name: CASTLEBAR INDUSTRIES CORP., NEW JERSEY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WIESENFELD, ARNOLD;BARBOUR, JAMES K.;REEL/FRAME:006665/0662
Effective date: 19930807
Aug 12, 1998REMIMaintenance fee reminder mailed
Nov 22, 1998LAPSLapse for failure to pay maintenance fees
Feb 2, 1999FPExpired due to failure to pay maintenance fee
Effective date: 19981122